package com.heima.app.filter;

import com.heima.app.utils.AppJwtUtil;
import io.jsonwebtoken.Claims;
import org.junit.jupiter.api.Order;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.util.StringUtils;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

public class AuthFilter implements GlobalFilter, Ordered {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        ServerHttpRequest request = exchange.getRequest();
        ServerHttpResponse response = exchange.getResponse();
        String path = request.getURI().getPath();
        if(path.contains("login")){
            return chain.filter(exchange);
        }
        String token = request.getHeaders().getFirst("token");
        if(!StringUtils.isEmpty(token)){
            try {
                Claims claimsBody = AppJwtUtil.getClaimsBody(token);
                int status = AppJwtUtil.verifyToken(claimsBody);
                if(status==-1||status==0){
                    Object userId = claimsBody.get("userId");
                    request.mutate().header("userId",userId.toString());
                    return chain.filter(exchange);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        response.setStatusCode(HttpStatus.UNAUTHORIZED);
        return response.setComplete();


    }

    @Override
    public int getOrder() {
        return 0;
    }
}
